Draft-equalizer



(No Model.

W; H. BAKER.

DRAFT EQUALIZER. N0.'36 7,740. Patented Aug. 2; 1887.

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- UNITED STATES PATENT OFFICE.

XVILLTAM H. BAKER, OF OXFORD, ASSIGNOR OF ONEIIALF TO SAMUEL V. SMITH,OF PONTIAC, MICHIGAN.

DRAFT-EQUALIZER.

SPECIFICATION forming part of Letters Patent No. 367,740, dated August2, 1887,

Application filed June 10, 1887.

To all whom it may concern.-

Be it known that I, WILLIAM H. BAKER, a citizen of the United States,residing at OX- ford, in the county of Oakland and State of Michigan,have invented certain new and useful Improvements in Draft-Equalizers;and I do declare thefollowing to be a full, clear, and

exact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters and figuresof reference marked thereon, which form a part of this specification.

This invention relates to draft-equalizers wherein two horses arehitched to a doubletree abreast; and my object is to so contrive adevice that the horses will 'pull alike.

The invention which I have made will be fully understood from thefollowing description, taken in connection with the annexed drawings, inwhich- Figure 1 is a top view of my improved device, showing thedoubletree in a position at right angles to the line of draft. Fig. 2 isa similar view of the same parts, showing the doubletree oblique to theline of draft. Fig. 3 is a perspective view in detail, indicating theclevispin, by the aid of dotted lines, in two positions. Fig. 4 is anend View of one end of the doubletree, showing the slot and pinhole.Fig. 5 is a perspective view of the improved clevis without thefulcrum-pin.

.tcferring to the annexed drawings by letter, A designates a doubletreeor eveuer-bar, which is pivotally connected to a draft-pole or otherobject at a by the usual kingbolt. Equidistant from this point a, I formslots f vertically through the said doubletree near its ends, and beyondthese slots I make vertical perforations f. The slots on theperforations are equidistant from the central perforation, a.

I 110w employ clevises B, which are constructed as follows: Each clevisconsists of a long loop having right-angular offsets d, which areperforated vertically and designed to receive through them a removablepin, b, which passes through the slots f in the doubletree. The holes fthrough the ends of the double- Serial No. 210.924. (No mo .el.)

tree A are for a purpose which will be here inafter described. Theclevises have vertical fulcrum pins or bolts 0 at their rearextremities, which serve two purposes-to wit, they unite the rear endsof the longitudinal portions a of the clevises, and they also affordbearings against the rear edge of the doubletree when this tree is movedout of line, as indicated in Fig. 2 on the right'haud side of thisfigure.

When the horses are abreast and drawing evenly, the doubletree will beat right angles to the line of draft and in the position indicated inFig. 1. Vhen the animals pull alike and it is desired to use the devicesas ordinary clevises, the pins 1) are put through the holes f and f.\Vhen the animals do not pull evenly, the pins b are inserted throughthe lateral projections or arms (Z and through the slots f. The slots fare at right angles to the length of the doubletree, and when the pins bare passed through the arms (Z and through said slots they will moveforward and backward and allow the vertical pins 0 to find a bearing onthe posterior edge of the double tree, according to the draft exerted bythe different draft of the animals pulling. For example, reference beinghad to Fig. 2 of the annexed drawings, it will be observed that thedotted line y indicates the common line of draft; the dotted line 3/indicates the line of draft for the horse which pulls the strongest, andthe dotted line y indicates the line of draft for the horse which isbehind. This Fig. 2 is designed to representthe position of thedoubletree with respect to the clevises when this donbletree is obliqueto the line of draft, and it illustrates that the pin or bolt 0 on oneend of the doubletree has been moved away from the rear edge of thedoubletree, while the pin 0 of the opposite clevis has been moved towardand bears against the doubletree.

It will thus be seen that the leverage is compensating and automaticallyadjusting; that the rear pins or connectingbolts, 0, find a hearingagainst the rear edge of the doubletrce when the pins b are adjusted. inthe position indicated in Fig. 3. It will also be seen from the abovedescription that I am able to use the elevises B by a simple adjustmentof the vertical fulcrum-pinscand perforated oflsetsd, 10

pins Z) for two horses which pull alike, or for and an interchangeablepin, 1), adapted for the two horses which pull differently. I severalperforations through the elevises.

Having thus fully described my invention, In testimony whereof I affixmy signature in 5 what I claim as new, and desire to secure by presenceof two witnesses.

Letters Patent, is- XVILLIAM H. BAKER.

The combination, with a (loubletree perfo- Vitnesses: rated at f andtransversely slotted at f, of J. C. BIRD, perforated loopshaped elevisesprovided with I JAMES XV. BERRIDGE.

